Petroleum Technology Digest: Polylined tubing reduces downhole failures ///

Many operators are using polylined tubing to reduce well failures from rod-tubing wear and tubing corrosion in artificial lift and injection wells. BP America, ChevronTexaco, Conoco and Fasken Oil and Ranch have used polylined tubulars in over 41 wells with substantial savings in operating costs. Polyliners, which are mechanically-bonded materials, provide cost savings by allowing the use of lower-quality tubing (blue, green, etc.). This bonding practice allows liners to be installed over used internal plastic coatings without the cost of removing the coating. The end finish process during installation eliminates the need for corrosion barrier rings, inserts, special torque procedures, and/or service technicians.

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